Grate shaking and dumping device



Jun 2, 1931. o. P NYSTROM 1,808,004l

GRATE` SHAKING AND DUMPI'NG DEVICE Filed Jan.- 17, 1950 I 4 INVENTOR f BY y W ra/J AATTORMFYS Patented June 2, 1931 UNITED STATES PATENT oFFlca OSCAR P. NYSTROM, OF HOLLAND, MICHIGAN, .ASSIGN'OR TO HOLLALN }E`1'IR1\`I'.A.(`JIIl?ACOM- PANY, F HOLLAND, MICHIGAN y Y* GRATE SHAKING AN D DUMFING- DEVICE Application/filed January-17, '1930. Serial No. 421,384.

p The invention is an improvement upon the grate shaking and dumping device appearing in patent application of James Murchie, filed Feb. 23, 1929, Ser. No.7342,073. d

The objects of the invention are: First, to improve the organization of that combination and simplify the arrangement 0f Pme Y Y Second, to provide an improved connection by the shaking and dumping bar and the shaker arm of the furnace grate.

Third, to provide improved means of rocking the shaker bar.

Fourth, to provide improved base bracket connection.

Objects pertaining to details will definitely appear from the description to follow.

A preferred embodiment of my invention is shown in the accompanying drawings, in which:

Fig. 1 is a detail perspective view of my improved grate shaking and dumping device shown in position on a furnace, parts of the furnace being indicated by dotted lines, and the grate being in operative position.

Fig. 2 is a similar view to that of Fig. 1, showing the grate in dumped position, the grate being shown in full lines.

Fig. 3 is a vertical detail sectional elevation view, somewhat reduced in size, taken on the plane indicated by line 3-3 of Fig. 1.

Fig. 4 is an enlarged det-ail sectional view on line 4 4 of Figs. 1 and 5.

Fig. 5 is a detail sectional view on the irregular line 5 5 of Fig. 4, showing details of the swivel connection and the dumping lever means.

Parts will be identied by their numerals of reference which are the same in all the views.

1 is the ash pit casing of the furnace in the usual form, indicated by dotted lines. 2 is the flanged doorway or frame. 3 is the dumping grate. 4 is the rocking cross bar on which the grate 3 is pivoted at 5 (see Fig. 6 isthe actuating shaker arm secured to the downwardly extending lug 31 on the grate 3 and projecting out to a point which is `within the plane of the ash pit door. This arm 6 is oscillated to shake the grate and is dropped. down to dump the grate.;` vThe saine is shown inoperative position in Figsland 3, and in the dumped position in Fig. 2. Y j Y 7 is the shaker lever fulcrumed at 71 on the base bracket 8 which is secured to vthe' hinged lug 9 at the side ofl the ash pit casing. 10 is the reciprocating bar fromthe lever "7 extending through a hole in lthe'ash pit4 door. frame to couple Vto the grate shaker bar. This bar issupported at its mid-point by the'opening in the said ash pit door frame through which it is adapted to reciprocate'. The bar can also be turned on itsaXis to drop the grate. Y e

The inner end 101 of the bar 10 isaformedy like a crank and is provided with ashackle 11 which extends into a loop 111 .whichzem-V braces the said shaker arm 6 so that when the shaft 10 is turned 180, it dr'ops the shaker arm and tips and dumps the f grate",V it being possible to shake the grate inthe dumped position to freely dischargelits contents into the ash pit below.

The outer end of theA bar 10 is 'also carried by a shackle 12 through which it s'wivels, the1 saine being' supported on cross pivot bolt ,13, as clearlyvseen inFigsg4and 5.* i f Bar 10 isV provided'with a collar- 102 -`to shoulder against the shackle'12 and isfretained at its outer end by cross pin 108. The outer'y end of bar 10 is squared at 104. Turning lever 14 is slotted at 141and engages theY squared portion 104 ,of-the bar 10. QThis/turning arm is also providedwith a handle; 142

and witha pair ofengaging lugs 143 which embrace the lever? aboveor below, dependingV on the position Vto which it is adjusted. The lever 14 is-provided withsegmental projections 144 each side of the slot141 to seat against the shackle, 12 and permit the rocking movement when the 'grateisbeing shaken. y f V a .I From this descriptio'nit will be seen that:

when the deviceis in the position illustratedl in Figs.,1 and '2, the adjusting arm-Mis lockedinlthe upper position by its lugs143 Y each side .of the lever 7. and thev grate canibe rocked back Yand forth by Ymanipulating the` handle `which carries the bar V10 .outfandin through the Vopening in the frame, shaking v dump the grate.

I desire to state that my improved structure can be considerably modi-@ed Without departing from my invention. I desire to claim the same specifically A and ualso broadly as pointed out in the appended claims.

I-I'aving thus described my invention, what I' claim as new and desire tosecure by Letters Patent, is:A y

1A. In a. grate shaking` and dumping device, the combination vvit'hl the ash pit 'casing,-oi:` a

dumping grate thereinhaving a shaker arm,

a base'bracket outside of said casing, ,a vertically slotted lshaker lever ulcrumed on the said 'base' bracket-,a reciprocating grate shaker bar. having a crank arm formed on its inner end and squared at-its outer end 'disposed toreciprocate. through an opening in the side off the ash pit door-frame', Va slotted shackle embracing the said shaker arm and pivoted to the s aid crank on the said grate shaker bar, a. shackle disposed inthe vertical slot-in said shaker-leverjournalled on the louter end of sai d1 shaker bar and across pivot boltin the i slot-in said.' lever for pivot-ally supporting said shaker bar,a 'dumping leverslotted to embrace the squared7 end of the said shaker bar to-turn the same upordown, andengaging lugs on said dumpinglevertoengagethe said shaker lever and' secure the said bar in up or down position.

arm formed on its inner end disposed to reciprocate through an opening'in the side of the ash pit door frame, a slotted shackle embracing t-he said shaker arm and pivoted to the said crank arm on said grate shaker bar, a shackle disposed in the vertical slot in said shaker lever journalled on the outerl end of saidshaker bar and a cross pivot bolt in the slot in said lever for pivotally supporting said shaker bar, and a dumping lever slotted to embrace thesquared end of the said shakerv 2. In a grate shaking and--dumping-device, e

the combination With theash-pi-t casing, of a dumping grate therein having a shaker arm, a base bracfketoutside ofsaid' casing, .a vertically slotted shaker lever fulcrumed on the said' basebracket, a reciprocating grate shaker bar havingarank-arm formed onits inner end and squared at its outerl enddisposed toereciprocate through an openingfin'the side of the-ash pit door frame, 'av slotted shackle embracingthe said-shakerarm and pivoted to the said crankarm on said' grate shaker bar, a shackle disposed in the vertical slot in said shaker-` lever j'ournalledonthe-outer'end of said shaker. bar and a cross pivot bolt in the slot in the-said lever forpivotallysupporting said shaker bar, and a dumping lever slotted to embracethe squaredjendoffthe saidshaker bar-to turn thesame up or down.

3. 'In av grate shakingl and ndumping device, the combination with the ash pit casing, ol" a dumping grate vtherein ,having a shaker arm, a vertically Slotted Shaker. leven@ recipc IQcstng grate. Shaker berharingacrank 

